Tool for releasing clock springs



Oct. 28, 1952 B. F. cAMERoN 2,615,357

TOOL FOR RELEASING CLQCK spnmcs Filed July 27. 1949 INVENTOR. I

Zmm ffiMeRa/v Patented Oct. 28, 1952 UNITED STATES mm 1 OFFICE TOOLFORRELEASING CLOCK SPRINGS Beryl F. Cameron, Cambridge, Ohio ApplicationJuly 27, 1949, Serial No. 107,035

3 Claims. 1

This invention pertains to tools but more particularly and specificallyto a jewelers tool.

In the repair of clocks and the like one of the most difiicult andlaborious details is that of releasing, without injury to the otherworking parts of the clock and the workers hands, the clock spring andthe present invention has as its primary object provision of a tool bywhich the clock springs of any and all makes and types of clocks can bequickly and easily released without injury to the springs.

Another object of the invention is the provision of a device of thecharacter described composed of a minimum number of parts all of whichare extremely simple of construction thus providing a tool which iscomparatively cheap of manufacture and assembly and therefore cheap ofproduction.

Another and further object of the invention is the provision of a toolof the character described which is sturdy and simple and thereforehighly durable.

Another object of the invention is the provision 'of a device of thecharacter described which although simple of construction is highlyeificient in operation.

Another and further object of the invention is the provision of a deviceof the character described which is both practical and convenient inuse.

Other objects, advantages and novel features of construction of theinvention will appear from the following description when read in thelight of the accompanying drawings.

In the drawings:

Fig. 1 is a view in side elevation of the tool, a portion of the figurebeing broken away and shown in vertical section.

Fig. 2 is a View in side elevation of the tool, the figure being takenat right angles to Fig. 1.

Fig. 3 is a horizontal sectional View on the line 3--3 of Fig. 1,looking in the direction indicated by arrows.

Fig. 4 is a fragmentary vertical sectional view on the line 4-4 of Fig.1-, looking in the direction indicated by arrows.

The tool comprises a pair of opposed handlelike elements I and 2pivotally connected to one another at 3 whereby upon manual manipulationthe opposed jaws 4 and 5 of the handles may be moved toward and awayfrom one another.

A short distance from their connected ends the handles are enlarged toprovide circular platelike elements 6 and I each of which centrally iscut out to provide through the handles a bore 8.

A shaft, designated and H at opposite sides of the'handles; Each of theextending ends of the shaft is provided with a longitudinal bore, thetwo bores being l2 and i3. Each of the bores is provided with opposedcut-out portions to providein the shaft end 10 a longitudinal slot blandin the shaftenddl a longitudinal slot it. The

I!) and l i can be formed integral with the center shaft portionli or asseparate attachable and, Y detachable parts should this be found to bede y sirable.

The center portion 9 of the shaft carries a washer-like element it whichconstitutes on the shaft a circumferential flange.

carries some suitable material, such as brake lining or the like, IT onits opposite faces. However should it be found more desirable thisbraking w material could be formed on or secured to the jaws I of thehandles.

The extending ends It and i l of the shaft are for the purpose ofengaging clock keys of dif ferent sizes. 7

in the shaft end ii. The Wings l3 and is ofth A clock key B is shownpositioned key handle are disposedv in the shaft slot iii which holdsthe key against axial rotation, The

key spindle 29 extends outwardly beyond the shaft end. The two sizes ofshaft ends illustrated would ordinarily be sufficient to accommodate allsizes of clock keys, but as mentionedthese shaft ends could be madedetachable so that other shaft ends could be substituted were thisnecessary for proper operation in connection with any particular andunusual clockkey.

In Operation the y is inserted in the out wardly extending end of thewinding arbor or shaft, as illustrated in Fig. l, and the socket 2| ofthe key is fitted over the arber of the clock' The tool handle-s l and 2are gripped spring. in substantially the same manner that a pair of withthe rachet wheel of thespring arbor.

tion on the shaft'washer or flange "i6 can'be eased off or tightened atwill so as to permit the. clock spring to unwind under complete controland without any danger of injury.

Departures from the specific construction illustrated in the drawingscan be made without'departure from the inventive concept and the in- 1as an entirety by A, coniprises a round center portion 9 whichisrlooselyrotatable in thebore 8 and'has'extending ends l ii shaftextensions This flange is disposed between the handle jaws 4 and 5 andvention is to be limited only within the scope of the hereinafterfollowing claims.

What I claim is:

1. A tool of the character described comprising, a shaft having meansfor quickly detachably en aging the spring arbor of a clock or the like,a pair of inter-connected jawed handles supporting said shaft for freeaxial rotation, the jaws being movable toward and away from one anotherin'a direction longitudinal of the longitudinal axis of the shaft, theshaft intermediate the jaws being provided with an outwardly extendingcircumferential flange, and the opposite sides of said flange beingengaged by the inner faces of the jaws upon movement of the jaws towardsone another.

2. A tool of the character described compris- 7 ing, a shaft havingmeans for quickly detachably engaging the spring arborof a clock or thelike, a pair of inter-connected jawed handles supporting said shaft forfree axial rotation, the

'4 ing the frictional engagement between the jaws and said shaftportion.

3. A tool of the character described comprising, a shaft having meansfor quickly detachably engaging the spring arbor of a clock or the like,a pair of inter-connected jawed handles supporting said shaft for freeaxial rotation, the jaws being movable toward and away from one anotherin a direction longitudinal of the longitudinal axis of the shaft, theshaft intermediate the jaws of the handles being provided with anoutwardly extending circumferential flange the opposite faces of, whichare engaged by the inner faces of the jaws upon movement of the jawstoward one another, and. the inner faces of the jaws being provided witha friction material acting to promote and increase the frictionalholding engagement between the jaws and the shaft flange.

BERYL F. CAMERON.

REFERENCES CITED The following referencesv are of record intthe file ofthis patent:

UNITED STATES PATENTS Number Name Date 1,068,754 Ferry July 29, 19131,165,249 Harbour Dec. 21, 1915

